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f Boya Universal Adapter BY-K4 3.5mm TRRS to USB-C
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Boya Universal Adapter BY-K4 3.5mm TRRS to USB-C

The BY-K4 by Boya is a universal adapter from 3.5mm TRRS to USB-C. You can use this adapter cable to make recordings with an external microphone. You connect the microphone to your smartphone which requires a USB-C connection. With the optional accessories section you will find various microphones that you can use.

On one side, the adapter is equipped with a 3.5mm female jack plug (TRRS). You connect the male plug of the microphone you use to this. On the other side, the cable has a male USB-C connector, which you plug into your smartphone. The adapter cable has a length of 60 mm. Compared to other cables in the market, you benefit from a more durable, thicker cable and therefore have a smaller chance of cable breakage.

Application Boya BY-K4

You can use this adapter to use your smartphone with USB-C connection with an external microphone. The small size allows you to easily take the adapter anywhere. This way, you can always conduct interviews or report live even in unexpected situations. This makes the Boya BY-K4 an indispensable, yet affordable accessory to always have with you. Optional accessories also include other adapters, including TRS and Lightning connectors.


  • 1x 3.5mm TRRS (female) to USB-C (male) adapter cable
  • 1x Warranty card

This product has a limited stock.

Price incl. VAT: € 18,95

Suitable for:HelpSmartphone
Microphone connector:Help3.5 mm mini jack plug, USB-C
Verbindung (kabellos):HelpBekabeld

For many years, the Boya brand is specialized in making high-quality microphones. Because the brand has its own development laboratory, they can continue to provide high quality products, at a competitive price!

The company is specialized in making microphones for photography and other digital audio devices. The microphones of Boya are suitable for renowned brands including: Nikon, Canon, Sony, Olympus, Pentax, Panasonic, Samsung, Lycra, Apple (iPhone, iPad, and iPod touch). Each Boya product shows the passion to achieve an excellent sound quality!

When you buy Boya products through us, we have an exclusive offer: only with Benel will you receive a three-year warranty, after registration via the warranty card in the packaging.

Go to all Boya products